a flat character that is known by only a single, dominant trait

Chances are, you can see the ways in which both heredity and environmental factors (such as lifestyle, diet, and so on) have contributed to these features. Why are you the way you are? As you consider some of your features (height, weight, personality, being diabetic, etc.), ask yourself whether these features are a result of heredity or environmental factors, or both. Before going into these topics, however, it is essential to emphasize the interplay between heredity and the environment. We will look at what happens genetically during conception and take a brief look at some genetic abnormalities. In this lesson, we will look at some of how heredity helps to shape the way we are. Heredity: The Epigenetic Framework (Ob 3) Nature and Nurture Before going into these topics, however, it is essential to understand how genes and chromosomes affect development. Next, we will present the birth process and some of the complications that can occur during delivery. We will also discuss the impact that both partners (e.g., mother and father) have on the developing fetus.

Next, we will consider what happens during prenatal development, including the impact of teratogens. We will look at what happens genetically during conception, and describe some known genetic and chromosomal disorders. In this chapter, we will begin by examining some of how heredity helps to shape the way we are. The objectives are indicated in the reading sections below. Discover the sensory abilities and risks of newborns.Predict the risks to prenatal development posed by exposure to teratogens.Describe a normal delivery and complications of pregnancy and delivery.Describe human development during the germinal, embryonic, and fetal periods and differentiate between the three periods of development.Describe the function of genetic counseling.

Differentiate between genetic disorders and chromosomal abnormalities.

Define genotype-environment correlations and genotype-environment interactions, and define epigenetics.

Question the assertion that human traits are genetic.

Distinguish between mitosis and meiosis, genotype and phenotype, homozygous and heterozygous, and dominant and recessive.

Photos Courtesy of Will Hastings (Left), Mamma Loves (Center) and MIKI Yoshihito (Right) Objectives:Īt the end of this chapter, you will be able to…

A flat character that is known by only a single, dominant trait